Acid hydrolysis of cellulosic fibres: Comparison of bleached kraft pulp, dissolving pulps and cotton textile cellulose
Artikel i vetenskaplig tidskrift, 2016

The behaviour of different cellulosic fibres during acid hydrolysis has been investigated and the levelling-off degree of polymerisation (LODP) has been determined. The study included a bleached kraft pulp (both never-dried and once-dried) and two dissolving pulps (once-dried). Additionally, cotton cellulose from new cotton sheets and sheets discarded after long-time use was studied. Experimental results from the investigation, together with results found in literature, imply that ultrastructural differences between different fibres affect their susceptibility towards acid hydrolysis. Drying of a bleached kraft pulp was found to enhance the rate of acid hydrolysis and also result in a decrease in LODP. This implies that the susceptibility of cellulosic fibres towards acid hydrolysis is affected by drying-induced stresses in the cellulose chains. In cotton cellulose, it was found that use and laundering gave a substantial loss in the degree of polymerisation (DP), but that the LODP was only marginally affected.

Cotton

Dissolving pulp

Hornification

LODP

Kraft pulp

Acid hydrolysis

Författare

Anna Palme

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Hans Theliander

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Wallenberg Wood Science Center (WWSC)

Harald Brelid

Södra Innovation

Carbohydrate Polymers

0144-8617 (ISSN)

Vol. 136 1281-1287

Drivkrafter

Hållbar utveckling

Ämneskategorier

Kemiteknik

DOI

10.1016/j.carbpol.2015.10.015

PubMed

26572472

Mer information

Senast uppdaterat

2018-09-06